Results 11 to 20 of about 716,957 (263)

5hmC modification regulates R-loop accumulation in response to stress

open access: yesFrontiers in Psychiatry, 2023
R-loop, an RNA-DNA hybrid structure, arises as a transcriptional by-product and has been implicated in DNA damage and genomic instability when excessive R-loop is accumulated. Although previous study demonstrated that R-loop is associated with ten-eleven
Xingyun Xu   +9 more
doaj   +1 more source

Modification of Subtelomeric DNA [PDF]

open access: yesMolecular and Cellular Biology, 2004
There is a discrepancy in telomere length as measured by signal intensity of telomere restriction fragments on gels and fluorescence in situ hybridization analysis. This difference has been ascribed to the X-region, a segment of subtelomeric DNA that is resistant to being cut by restriction enzymes. To explore the nature of this region, we analyzed the
Susanne, Steinert   +2 more
openaire   +2 more sources

Genetic Modification of Sodalis Species by DNA Transduction

open access: yesmSphere, 2021
A large number of economically important insects maintain intimate associations with maternally inherited endosymbiotic bacteria. Due to the inherent nature of these associations, insect endosymbionts cannot be usually isolated in pure culture or ...
Chelsea M. Keller   +4 more
doaj   +1 more source

Allele-Specific PCR for PIK3CA Mutation Detection Using Phosphoryl Guanidine Modified Primers

open access: yesDiagnostics, 2023
Phosphoryl guanidine (PG) is the novel uncharged modification of internucleotide phosphates of oligonucleotides. Incorporating PG modification into PCR primers leads to increased discrimination between wild-type and mutated DNA, providing extraordinary ...
Alexey S. Chubarov   +5 more
doaj   +1 more source

Alleviation of C⋅C Mismatches in DNA by the Escherichia coli Fpg Protein

open access: yesFrontiers in Microbiology, 2021
DNA polymerase III mis-insertion may, where not corrected by its 3′→ 5′ exonuclease or the mismatch repair (MMR) function, result in all possible non-cognate base pairs in DNA generating base substitutions.
Almaz Nigatu Tesfahun   +10 more
doaj   +1 more source

The extremophile Picrophilus torridus carries a DNA adenine methylase M.PtoI that is part of a Type I restriction-modification system

open access: yesFrontiers in Microbiology, 2023
DNA methylation events mediated by orphan methyltransferases modulate various cellular processes like replication, repair and transcription. Bacteria and archaea also harbor DNA methyltransferases that are part of restriction-modification systems, which ...
Pallavi Gulati   +3 more
doaj   +1 more source

DNA N6-Methyladenosine modification role in transmitted variations from genomic DNA to RNA in Herrania umbratica

open access: yesBMC Genomics, 2019
Background DNA methylation is an important epigenetic modification. Recently the developed single-molecule real-time (SMRT) sequencing technology provided an efficient way to detect DNA N6-methyladenine (6mA) modification that played an important role in
Mei-Wei Luan   +5 more
doaj   +1 more source

A novel DNA modification by sulphur [PDF]

open access: yesMolecular Microbiology, 2005
SummaryStreptomyces lividans has a novel DNA modification, which sensitises its DNA to degradation during electrophoresis (the Dnd phenotype). The entire gene cluster (dnd) involved in this modification was localized on an 8 kb DNA fragment and was expressed in a S. lividans deletion mutant (dnd) and in several heterologous hosts. Disruption of the dnd
Xiufen, Zhou   +7 more
openaire   +2 more sources

Glyoxalase biochemistry

open access: yesBiomolecular Concepts, 2015
The glyoxalase enzyme system utilizes intracellular thiols such as glutathione to convert α-ketoaldehydes, such as methylglyoxal, into D-hydroxyacids. This overview discusses several main aspects of the glyoxalase system and its likely function in the ...
Honek John F.
doaj   +1 more source

DNA Methylation Regulator-Meditated Modification Patterns Define the Distinct Tumor Microenvironment in Lung Adenocarcinoma

open access: yesFrontiers in Oncology, 2021
BackgroundEpigenetic changes of lung adenocarcinoma (LUAD) have been reported to be a relevant factor in tumorigenesis and cancer progression. However, the molecular mechanisms responsible for DNA methylation patterns in the tumor immune-infiltrating ...
Didi Yuan   +8 more
doaj   +1 more source

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